fix: use correct module to regex-replace string in file

tasks/configure_ssh_hardening.yml

 ---
 # man update-crypto-policies for details
 - name: make sure that SSH on RHEL respects the custom settings in sshd_config
-  ansible.builtin.regex_replace:
+  ansible.builtin.lineinfile:
     path: "/etc/sysconfig/sshd"
     regexp: "# CRYPTO_POLICY="
     line: "CRYPTO_POLICY="